Heatmap on 1d-time series data

7 次查看(过去 30 天)
Hello community,
i got several events on a 1-dimensional double Vector (about 60.000 x 1) (like a logical vector).
VecEvents=[0 0 0 1 0 1 0 1 1 0 1 0 0]; % 60.000x1 double
I extracted the timepoints the events occured and plotted them on a horizontal line to mark events:
Events=find(VecEvents==1);
y=ones(length(Events),1));
scatter(Events,y);
Here is an example of my real data:
Scatter.png
What I want is something like a coloured line or bar which highlights density of events.
My first approach was to smooth the vector linearly by a moving mean:
SmoothedEvents=movmean(Events,600);
So, this is not a solution, but if I plot my averaged vector against the time it will look like this:
t=1:length(SmoothedEvents); % I used a different vector for x-axis in the plot underneath
plot(t,SmoothedEvents);
movmean.png
Does anyone have a suggestion how to create a 1-dimensional heatmap (or something similar - see above) from my data? Is there even a better approach than averaging the vector?

采纳的回答

KSSV
KSSV 2020-2-8
YOu can use somehting linke this:
x = 0:.05:2*pi;
y = sin(x);
z = zeros(size(x));
col = x; % This is the color, vary with x in this case.
surface([x;x],[y;y],[z;z],[col;col],...
'facecol','no',...
'edgecol','interp',...
'linew',5);
colorbar
  1 个评论
Robin Schäfer
Robin Schäfer 2020-2-8
Thank you, KSSV! Took me a while to understand 'surface' function but it works just the way i wanted (with adjusted movmean):
colorbar.png
I am not really sure if averaging is mathematically the right approach to highlight density....

请先登录,再进行评论。

更多回答(0 个)

类别

Help CenterFile Exchange 中查找有关 Data Distribution Plots 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by